Re: getl strange behaviour (?)

[Jaroslav Hajek]

On Thu, Jul 17, 2008 at 5:07 AM, talassio <address@hidden> wrote:
>
> Hello!
>
> Suppose we want to getl the following file: fid=fopen(pfmc100.dimacs, "r");
>  --- start file ---
> a 5    4  0    5 -1
> a 6    5  0    8  0
> a 6    4  0   15  7
>  --- end file ---
>
>> linea = getl(fid);
>> [str de a l u c cnt] = sscanf(linea, '%s %i %i %i %i %i', "C");
> c = -1
> cnt = 6
>
>> linea = getl(fid);
>> [str de a l u c cnt] = sscanf(linea, '%s %i %i %i %i %i', "C");
> c = [](0x0)
> cnt = 5
>
>> linea = getl(fid);
>> [str de a l u c cnt] = sscanf(linea, '%s %i %i %i %i %i', "C");
> c = 7
> cnt = 6
>
> That is, if the last number on a line is 0 (zero) it won't be correctly
> read: c=[](0x0) with cnt=5. If it is other number/letter there is no problem
> (cnt=6).
>
> A work around is:

Next time please read http://www.gnu.org/software/octave/bugs.html
for details about bug reporting.

What's your Octave version?
I guess you're seeing the problem reported and fixed here:
http://www.nabble.com/sscanf-misses-%220%22-conversion-w--%22-i%22-at-end-of-string-td16637114.html#a16662072

Anyway, it is apparent that it is a problem with sscanf and not fgetl.

regards

>
>> [str de a l u c cnt] = sscanf(linea, '%s %i %i %i %i %s', "C");
> c = str2num(c)
>
> and worked as expected on the lines where the last item is a 0 (zero).
>
> I am not sure this is the correct behaviour of getl(...).
>
> Any comments?
>
> Andres.
>
>
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>
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-- 
RNDr. Jaroslav Hajek
computing expert
Aeronautical Research and Test Institute (VZLU)
Prague, Czech Republic
url: www.highegg.matfyz.cz